Zalău, Romania climate

Cfb Oceanic / temperate

Zalău has a seasonal cool-temperate climate (Oceanic / temperate, Köppen Cfb). The hottest month is August with an average daily high near 27°C, while the coldest is January averaging around −4°C at night. Precipitation totals about 438 mm a year and is strongly seasonal — June alone averages 60 mm while March barely receives 15 mm.

☀️ Summers

Warm

Highs near 27°C in August.

❄️ Winters

Cold

Lows near −4°C in January.

🌧️ Rain

Fairly dry

About 438 mm of rain a year.

Wettest in June

⛅ Sky & trend

Often cloudy

Cloudy skies much of the year.

Temperature & precipitation

Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figures

Hours of sunshine per day

Estimated sunny hours each month — daylight length × clear-sky fraction · 1991–2020 monthly cloud cover (NASA POWER)

Zalău climate normals (1991–2020)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°C)	2	6	10	16	21	25	27	27	21	16	9	3
Avg temp (°C)	−1	2	6	11	16	19	21	21	16	12	5	0
Avg low (°C)	−4	−2	1	6	10	14	15	15	11	7	2	−2
Precipitation (mm)	21	18	15	22	50	60	55	37	43	33	43	41

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Avg high (°C)	2	6	10	16	21	25
Avg temp (°C)	−1	2	6	11	16	19
Avg low (°C)	−4	−2	1	6	10	14
Precipitation (mm)	21	18	15	22	50	60

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°C)	27	27	21	16	9	3
Avg temp (°C)	21	21	16	12	5	0
Avg low (°C)	15	15	11	7	2	−2
Precipitation (mm)	55	37	43	33	43	41

Sky & atmosphere

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	71	72	67	65	65	61	55	49	61	63	70	74
Relative humidity (%)	89	85	78	73	70	67	63	59	66	74	83	89
Wind speed (m/s)	2.3	2.5	2.5	2.2	1.9	1.8	1.8	1.7	1.9	1.9	2.0	2.1

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Cloud cover (%)	71	72	67	65	65	61
Relative humidity (%)	89	85	78	73	70	67
Wind speed (m/s)	2.3	2.5	2.5	2.2	1.9	1.8

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	55	49	61	63	70	74
Relative humidity (%)	63	59	66	74	83	89
Wind speed (m/s)	1.8	1.7	1.9	1.9	2.0	2.1

Methodology & sources

Temperature & precipitation — 1991–2020 normals computed from 18 years of daily observations at Zalau, a weather station, about 2 km from the city centre. The underlying daily records come from NOAA's global station network.

Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.

How we build these numbers →